Home / 74,949.63-112,421.75-18,790.20

Finding the Fourth Proportional to 74,949.63, 112,421.75 and 18,790.20

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Solution

The fourth proportional to 74,949.63, 112,421.75 and 18,790.20 is: 28,184.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,949.63 : 112,421.75 = 18,790.20 : x
  2. Step 2: Convert to fraction form
    74,949.63/112,421.75 = 18,790.20/x
  3. Step 3: Cross multiply
    74,949.63x = 112,421.75 × 18,790.20
  4. Step 4: Simplify right side
    74,949.63x = 2,112,427,072.90
  5. Step 5: Solve for x
    x = 2,112,427,072.90/74,949.63
  6. Step 6: Final answer
    x = 28,184.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.